I've done 2200 miles in 3 weeks, 1600 of that has been 60-90mph motorway. At least 1 hour per journey, gentle warm up etc... The other 600 has been A road / country driving (not thrashy), but with the engine fully hot on every trip. Perfect for a long service interval you'd think? This evening I checked and it said 'service due in 9400 miles or 538 days'. Thats only 11600 miles to the first service. Have to keep my eye on that.